Belt



May 17, 1932. E E GRAY 1,859,204

BELT

Filed March 6, 1.930

Patented May 17, 1932 ELMERVE. GRAY, or sAUGUs'MAssAcHUsETTs p .BELT

Application med MarchA e,

This invention relates to belts such as are used in connecting pulleys for; the-.transmission of power, and to the method of manufacture thereof. v

It has for its purpose to provide a belt constructed from a standard commercial material such, for instance, as an ordinary fish line, assembled in such manner and method as to assume what I choose to term a braided le effect; to provide Aa newv and novel nonstretching belt; to provide a belt which may be readily shortened or lengthened with minimum effort and operation without adding to or subtracting from the material therein; to 1S providefan improved coupling means built into the body of the belt without puncturing or otherwise weakening the structure thereof; to provide novel means for securing the loose ends of the basic cord, designed to hold said ends fast yet bury the holding means, unseen in the finishedk belt asV a whole; `to provide an efficient belt at a cost never before realized in the belt industry; to provide 'a belt of greater flexibility than heretofore realized; to thereby minimize power requirements;rto provide abelt of greater wearing qualities than heretofore realized; to avoid direct pull on the basic material utilized; to render unnecessary binding or Vcoveringmai terial; to avoid all stitching and other means of adhesion; to optionally frender available the flexibility often required in bringing de signated machinesto a stop so `as to avoid shock or quick stop to insure a posi- 5 tive uniformity in the manufactured product so that known requirements may be at all times readily met; to render themethod available for use and accomplishment in connection withmechanisms in common use with- 0 out necessity of furnishing-expensive special machinery and equipment; andto provide the various otheradvantages and .results made evident from the following specification. I accomplish the objects of my invention l by tying together the ends of asuitably sized basic material, such for instance as ank ordinary fish line, so as to join one continuous, endless loop ofthe basic material from which. the finished belt is to be produced. Imount o this endless loop, with the tied portion or 1930. Serial No. 433,668.

knot at approximately one` quarter distance from its end upon an inexpensive mechanism designedv for twisting purposes, one end of the loop having thereon an eye embodying means designed to interlock Vlaterwithanother similar eye. A motorlvis then started to provide the twisting effect and an automatic stop provided designed to, function when the correct twistis had, the shut off being worked by the pull of the basic material whichshortens as the twisting ,progresses. -The end of the basic material, in twisted form, not vprovid'edwith the interlocking eye, is then disengaged from the. twisting mechanism and `joined with the eye on the opposite end, the center being doubled over a conveniently arranged standard. VAnother interlocking eye is then engagedwith the center of the loop where it s doubled and the material removed from the twisting mech- 70 anism. Whereupon it assumes at its own active volition, furnishedby the twistingdescribed, a braided effect particularly adaptable-and eficient for belting purposes.v 1I then impregnate the braided eect mate- 'l rial with a solutiolnpreferably a coaltar product designedto furnish a toughened and adhesive effect. The' belt, when dry, is then ready for commercial sale and use. `Intheperformance of its function of transmitting :S0 power between pulleys or-otherwise, it `may be as required for-given or changing purposes, shortenedby twisting or lengthened by untwisting 'so'that any desired degree of tightness or slackness mav be readily and easily had. i j u The interlocking eyes engaged withgthe original strands of the basic materialprovide an eiiicient and ready means for-hold-V ing the belt in operating form, yet areread- T ily disengaged for tightening, floosening'o'r mounting purposes. The knot :by which' the original ends ofthe basic material vwere joined becomes absorbed in the twisting proc'- ess so asto be practically unseen in the n- 4ishedproduct and of no hindrance in use.,`

4Avoidance of shock. Landfquick stop tightening the belt to meet specific `require-`V defined by the claimslle'reto' appended isnotY limited to the particular materials or steps which have been chosen for illustrative pur'- poses in this specification, andl that While I have illustrated and described a preferred eonstvuctifon'- fon carrying myl invention into effect, this is capablev of variationor modificavtiion without departngfrom the spirit of the invention.. Il expressly donot desirevto be' limited toitlieleX-act cl'etaiislofconstruction herein set forth-'Shut desirex to avail myself of snchvariations and modifications as come Within* the scope' of' theY appended claims.

Referring tol the accompanying drawings whichx frmvl a part of this specifications and in' which similar l'etterslof reference referto simi-lar p'afrts throughout the"v various views, Figre'l-Q shows ai side View ojf the mechanism by which the twisting is-I applied to? the basic material? Fig'ur'e sho-wsa loop ofthe'basic materiali from which' theA heltisimanatfactured with an interlocking eyeen-graved at' one end', ordinary fishing line or cord: being used for* this p'articula-r4 illustration.; lllignrexv 3 shows the cord andi interlocking eye pictured in FigureV 2fL as positioned on; the machine partswith1 thel twisting appl-fied to said? corcliilgnkfe'l sho'W-sfthe twisted? material in: position`= x'flt'e'r' bein-g folded over the hook onitlie center standard.. Figure show'sfthetwi'ste'd material as it. begins to assu-me' the-braided effect?" affter' loosening' doubled end at til-fief center stanrl'afrdi. Figure @shows then.- ifshedik braided eneewbelt, having no* sembllanceef al twisted product.

f Referring' again tio-the drawings, A shows memeter; Band B12 show the'. tace parts of the'Y friction clutch', shows the shiiftlever by which the friction clu'tcl'r isf opera-ted.4 D showsitlie'shaft bearing.' E shows ahook on the end of the shaft` F over which hooltlre coupling eye Gf on the cord: is. pliaceellA I Y "s'hiywsi ahooki on. the spring' J which spring' is secnrecltothememberlby the" hook L. The

member' K iis mnuntedat vits end opposite' the heelal, 'to aleverage arm M. falcrunnerl. at M2 which! arm inturn is; adjustab'ly connected by thevpinf N to` the: plunger' rod O', the opposite endl offy which is connected. to the shaft lever mi Cly A. loose cord P i's positioned'. Within the sprnfgJ secmredat both ends' thereof so' as toahec'om'e taut only `when the spring J is in extended positiomanfd desi-gnedtheir tooper aitezthe leverage arm" Qi shows the bed 'l5 of the' machine. Ri shows the: center stand- It will be realized,

ard movably mounted on the bed Qto allow shifting to the varying center point of the i different length cords used. R2 shows a hook mounted on the standard R. S shows the knot by which the ends of the cord H are tied together'. The part K2 is movably mounted upon: the bedQ; so as tocare for conds of varying' length.

It will be understood that after the cord H is mounted upon; the machine as shown in Figure l', the twist-ingis applied to the cord by starting the motor and closing the clutch, this closing being effected by moving the lever! in directionaway from the motor'so that the friction plates B and B2 on the clutch Contact.. As the Atwisting proglzessesy the basic: materialv or corda shontensg. the lspring J' 'stretches a' cOrres-pendingA distance;d and the cord P tightens, whereupone the arm.v M is pulled in aY direction toward' theamotor Which/by virtue of the rod*` Of forces thefloven C into similar position and disengages the clutch", The twisting:their` stops.. rEhe end of the basicy material. at the hook I is next disengaged', and the strands thereof placed upon the' coupling eyev Gr; thisbeingyreadily accomplished by meafrfmvhilefV doubling the materialiy H. over the hookA R2 on the centerT stan'dardR. .An eye'G2 i-sfthen.' enga-ged with the. strands of the.'` material` at,- thev point where iti doubles upon: the hoolr R2., The belt is then released and allowedtof assume its braidedr relation: assta'ted.v

Having thus described my invention, I claim as new and. desire'tov secure by Letters Patent of the United-Statesof Americas- 1. The` method of makinga belt which. in cludes engaging anv eye` having means of' en.- gag'ing aasimiflaln eye, withza; strand? of twisted 'basic material', assembling; saidA material in loop form. with the engagedeyethereon, the eye being at one end' thereof, upony ai mecha'- nismr designed' to twist said: material, twisting' saidA material thereion,l doubling sa'ifd material' at its center and engaging its'. end: opposite saidA eye with: the eye,V engaging anotherk simil-'ar vey'e-Y with said materia-lat i-ts doubledA portion,A and retwisting the materia-l till it `forms a braided effect.. y l' Ther meth-od! of making, avbel't which inclaides engaging` anf eye having means forr en:- gagi'ng. a. similar eye', Witha strand of twisted basic"materiaheassemhliirnv,H said material in loop' form with the. engaged eye thereon,- the eye being at'one end thereof,` upona; mechanismdesigned to twist said material, {twisting said matelrial thereon,-d'oublingsaiid material at its center' and` engaging its endopposifte said eye .withA the eye, engagingA another similar*eye with! said materiali at its doubled portion, retwifstiingfthe-v material till it. forms a= ybra-Aided effect, impregnating`t'hejy braided effect materiaal- .wi-th asoluti-oni designed? to furnish a tough-erredandadhosive-eeet, and allowing, same toVr dry.. f s f -iV 3. The method of making a. belt which includes engaging an eye having means of engaging a similar eye, with a strand of basic material, assembling said material in loop form with the engaged eye thereon, the eye being at one end thereof, upon a mechanism designed to'twist said material, twisting said material thereon, doubling said material at its center and engaging its end opposite said eye with the eye, engaging another similar eye with said material at its doubled portion, retwisting the material till it forms a braided effect, impregnating the braided effect material with a solution designed to furnish a toughened and adhesive effect, and allowing same to dry.

4. The method of making a belt which includes making a loop of a basic twisted material by securing together the ends thereof, engaging with said material an eye, having means o engaging a similar eye, assembling said loop and engaged eye, the eye being at one end thereof, upon a mechanism adaptable for twisting said loop, the portion of said loop at which the ends are joined being positioned between its center and one end thereof, twisting Said loop, doubling the twisted loopupon itself, engaging a strand of the end without an eye on to the first mentioned eye, engaging a similar eye with the strands of the twisted loop at its double end andl allowing the twisted loop to retwist to a braided effect, impregnating the material with a solution designed to furnish a toughened and adhesive eflect and allowing same to dry.

5. The method of making a belt which includes making a loop of a basic material by securing together the ends thereof, engaging with said material an eye, having means of engaging a similar eye, assembling said loop and engaged eye, the eye being at one end thereof, upon a mechanism adaptable for twisting said loop, the portion of said loop at which the ends are joined being positioned between its center and one end thereof, twisting said loop, doubling the twisted loop upon itself, engaging a strand of the end without an eye on to the first mentioned eye, engaging a similar eye with the strands of the twisted loop at its double end and allowing the twisted loop to retwist to abraided effect, impregnating the material with a solution designed to furnish a toughened and adhesive eifect and allowing same to dry.

In testimony whereof I afiix my signature.

ELMER E. GRAY. 

